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Патент USA US2109258

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Feb. 22, 1938.
e. SLAYTER
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‘2,109,258
f SEALING APPARATUS
Original Filed March so, 1933 _ '4 Sheets-Sheet 1
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Feb. 22, 1938.
G. YSLAYTER
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2,109,258 _
SEALING APPARATUS
‘Original File‘d March-so, 1933 ' 4 sheets-sheet s _
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Feb. 22', 1938.- ‘
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GASLAYTIER
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SEALING APPARATUS
Originai Filed March so, 1935 ‘ 4 Sheets—$heet 4
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Patented Feb. 22, 1938
2,109,258
UNITED STATES. ' PATENT
OFFICE
2,109,258
SEALING APPARATUS
Games Slayter, Newark, Ohio, assignor to Owens
Illinois Glass Company, a corporation of Ohio
Application March '30, 1933, Serial No. 663,667
Renewed November 9, 1936 ,.
5 Claims.
My invention relates to apparatus adapted for
attaching parts together with an adhesive ap
plied in a liquid or semi?uid state to the surfaces
' which are to be united.
In the form of the in
‘Referring to the drawings, and as shown in '
Fig. 1, the mechanism for applying the sealing
material to the hollow articles is mounted on a
table I!) and includes a tank or container l2 for
vention herein illustrated, the apparatus is
the bath of sealing liquid. To the right of the
adapted for use in sealing a glass cover plate or
tank i2 is apparatus for use in uniting the hollow
block and its cover plate after a coat of the seal
lid in the open side of a hollow glass block to pro
vide a hermetically sealed hollow block.
An object of the invention is to provide a simple
10
(Cl. 226—82)
and practical sealing mechanism by which the
sealing operation may be quickly performed with
facility, neatness, accuracy and reliability, and
ing material has been applied.
' The mechanism for applying the sealing com
pound to the hollow blocks will first be described.
Referring to Figs. 3 and4, a vertical post I I ?xed
to the table, provides a support and guide for the
tank l2 in which is a bath I3 of the sealing liq
without waste of the sealing material. More par
ticularly, the invention provides an apparatus ~_ uid. The tank is movable up and down on the
including means for maintaining a bath of the post,_as more fully set forth hereinafter. The
sealing material at a suitable temperature for tank is jacketed with an outer case I4 spaced
application to the hollow block or article, means
‘therefrom to provide a chamber l5v enveloping
for applying to the edge of the article which is the bottom and side walls of the tank. Within to be sealed, a uniform layer or coating of the
sealing material, means for supplying hot, dry
air to the interior of the article before sealing,
and means to facilitate the uniting of the hollow
article and cover plate after the sealing material
has been applied.
constant temperature su?iciently high to keep
the bath of sealing compound l3 in a liquid or
semi?uid condition and at the proper temperature
for .the sealing operations.
A platform I‘! is
Other objects of the invention will appear here
inafter.
mounted on the tank I2 and provides a cover for
the chamber I5. Sealing material IB makes a
Referring to the accompanying drawings. which
illustrate apparatus constructed in accordance
'with the principles of my invention:
tight connection. between the platform I‘! and
the parts l2 and M.
The tank I2 with the platform I‘! thereon, is
Fig. 1 is a part sectional elevation of the appa
ratus.
Fig. 2 is a part sectional elevation of the air
drying and heating mechanism.
' Fig. 3 is asectional. elevation showing an appa
ratus for applying the sealingecompound, and a
hollow block positioned thereon.
Fig. 4 is a view similar to Fig. 3, but with the
platform. and hollow block thereon depressed for
applying the sealing material.
_
'
'
.-Fig. 5 is a fragmentary top plan view, partly
‘in section, of mechanism shown in Figs. 3 and 4.
Fig. 6 is va sectional elevation at the line VI—VI_
on Fig. 1, showing apparatus used in» uniting the
hollow/‘ lock and cover plate.
Fig. R7 is a fragmentary sectional view of such
apparatus with the hollow block moved down
ward into sealing engagement with the, cover
plate.
.
Fig. 8 is a view similar to Fig. 4, showing a
modi?ed construction.
Fig. 9 is a section at the line IX-IX on Fig. 8.
Fig. 10 _is a view similar to Fig. 1, showing a
modi?cation of the means for supporting the
hollow block and cover'plate during the sealing
'
the chamber I5 is a heating medium such as
glycerin or other liquid which is maintained at a
operation.
guided in its up and down movements by a hollow :
shaft or sleeve l9 ?xed to the tank and mounted
to slide up and down on the post ll. ‘Said sleeve
extends through openings in'the bottoms of the
tank l2 and the jacket l4 and is formed with a
flange 20 at its lower end engaging beneath the :.
case M, thereby supporting the tank and parts
carried therewith.
A hol ow block 2|, to which a cover plate is to
be sealed, is placed in an inverted position on the
platform 'I 7 and held against lateral displacement ll)
by means-of guide posts ,22 mounted on the plat
form.
The block 2| may be formed, as shown,
with a recess extending along its inner marginal _
surface top-rovide a sealing surface 23, said recess
being adapted to receive the cover plate 24 (see »
Fig. 7).
-
Y
The means for transferring a coating of the
sealing material from the bath l3 to the surface
23 includes a stationary transfer plate 25 which,
as shown, is made of comparatively thin sheet
metal and is mounted on a supporting plate 26.
The latter is formed with a hub or sleeve 21 which
surrounds the sleeve Ill.
The post II is formed
at its upper end with an extension 28 of reduced
diameter which extends through an opening in a
2
2,109,258
cap 29 threaded onto the upper end of the hub
21. A locking nut 30 clamps the cap 29 in posi
tion on the post | I. Overlying the transfer plate
25 is a clamping frame 3|. Screw bolts 32 clamp
the frame 3| and plates 25 and 26 together. A
key 33 (Figs. 4 and 5) secured to the sleeve I9 is
slidable vertically in a groove 34 formed in the
hub 21, thereby preventing rotation of the con-v
tainer l2 and connected parts during their up ind
10.
down movement. Extending along the outer
margin of the transfer. plate 25 is a coil spring
35 (Fig. 5) threaded through a series of perfor
ations 36 formed in the plate. The coil spring
provides an applicator for transferring the seal
15 ing compound from the bath and applying it to
the sealing surface 23 of the hollow block.
The tank l2 containing the bath of sealing
material is normally held in its elevated posi
tion by means of a coil spring 45 so that the
transfer plate with its applicator 35 is immersed
in the sealing material. When downward pres
sure is applied to the block 2|, the block and
tank are lowered so that the transfer plate 25
enters the block, bringing the applicator 35 into
contact with the surface 23 and thereby apply
ing a coating of the‘ sealing material to said
surface. The platform I1 is formed with an
opening 46 to permit the passage of the trans
fer plate therethrough.
The bath l3 of sealing material is heated to
the required temperature by a heating element
31 mounted within the heating chamber l5. The
heating element may consist of a standard im
mersion heater which includes a heating coil
within a metal casing, but insulated therefrom.
The coil is heated by an electric current supplied
from the mains 38 and 39.v One terminal of
the coil is connected through a conductor 40
to the main 38. The other terminal is connected
through a conductor 4| to one terminal of a
thermostat 42 mounted in the casing l4 and im
mersed in the heating liquid, the other terminal
of‘ the thermostat being connected to the min
39. The thermostat includes an automatic switch
43 which operates in a well known manner to
maintain the heating liquid l3 at a substan
tially constant temperature. That is, if the tem
perature falls below a predetermined degree, the‘
switch is automatically closed so that the heat
ing element 31 receives current and raises the
temperature, causing theswitch 43 to open when
the desired temperature is reached. The sealing
bath I3 is thus maintained at the desired tem
perature.
55
~
.
The sealing compound when intended for use
in sealing glass blocks, as herein set forth, may
consist of a mixture of 90% resin and 10%
castor oil. This provides a transparent cement
which is su?iciently liquid at a moderately high
temperature, for example, 150° to 160° F. to be
easily applied and at the same time possesses suf-'
?cient body to insure a complete seal. More
over, such a cement quickly cools and hardens
sufficiently to provide a permanent and reliable
seal.
While the hollow block and cover plate are
being secured together, the latter is supported
on a stationary platform 50 which is formed with
an integral bracket 5| for attachment to the
table ID as by means of bolts 52 (Fig. 6). The
supporting surface of the platform 5|) is sub
stantially co-extensive laterally with the cover
plate 24 which is supported thereon, the plat
form being preferably somewhat lower than the
table so that the plate 24 is supported with its
upper face on a ‘:evel with or just below the sur
face of the table Ill. Surrounding the platform
50 is a supporting frame or platform 53 which
provides a support for the hollow block 2|. The
table “I is provided with an opening 54 to re
ceive the frame 53 which is normally held at
about the level of the table. Coil springs 55
are interposed between- the platform 53 and
brackets 56 secured to the lower surface of the
table. The springs hold the platform normal 10~
ly in its uppermost position but permit it to
move downward under pressure. The springs
55 are mounted on posts51 attached to and ex
tending downward from the platform 53.
The
heads of said posts provide stops to limit the v15
upward movement of the platform.
Spring clips -
or stops 58 are mounted on the platform 53 in
position to engage the sides and one end of
the'block 2| when the latter is placed on the
platform 53 and thus hold the block centered 20
over the platform 53 and the plate 24 thereon.
Means for supplying hot, dry air to the interior
of the block 2| prior to the sealing operation,
comprises the apparatus shown in Fig. 2. This
includes an air compressor 59 which maybe of 25
conventional construction. a storage tank 50 for
the compressed air, a drier including a drum
6|, and a heater 62. The drier drum GUI .con
tains a suitable drying material 63 such as cal
cium chloride which serves to extract the mois
ture from the air passing therethrough. The
air under pressure is conducted from the tank
83 through a pipe “and enters a compartment
65 in the bottom of the drum SI, and passes up
ward through a perforated false bottom or screen
65 into the compartment containing the drying
material 63. The dry air passes from the drier
through a- pipe 61 to a heating coil 68. A gas
burner 69 maintains the coil “hat a high tem
perature, so that the air
through the
coil is heated to a high degree. The hot air is
conducted from the coil through a pipe 18 to a
nozzle ‘H which extends upward into or through‘
an opening 12 in the table II, said opening be
ing preferably located adjacent the platform 53. 45
A valve 13 in the, pipe ‘I0 serves as a throttle
valve to regulate the ?ow of hot air and may also
be used for shutting off the?ow of air.
The operation may be described as follows:
A hollow block 2| is placed open side down on 50
the platform I‘! and held against lateral dis
placement by the guide pins 22 attached to the
platform. Downward pressure is then applied‘
to the block, thereby lowering it, together with
the tank, to the Fig. 4 position, compressing the 55
spring 45. The bath. |3 of sealing compound is
thus lowered away from the transfer plate 25,
leaving a coating of the compound on the plate
and the coil spring or applicator 35. By the
downward movement of the hollow block 2|, the
applicator 35 is brought into the marginal re
cess of the block and thereby applies a coating
or ?lm 46I of the sealing material to the sur
faces of said recess. ' The pressure is now re
moved from the block 2|, permitting the tank
and parts carried thereby to be lifted by the
spring 45 back to the Fig. 3 position.
The block 2|‘ is then lifted from the platform
I‘! and placed on the table l0 over the ‘nozzle 70
1| so that the hot, dry air ?owing from the noz
zle quickly ?lls the vblock and also warms the
block to a certain extent. The block is now slid
to the right, to the full line position (Fig. 1) in
which it is supported on the platform 53, the 75
3
2,109,268
spring clips 58 serving to arrest and hold the
block centered on the platform.
’
Downward pressure is now applied to the block
2|, thereby lowering the platform and block and
bringing the block into sealing engagement with
the lid or cover plate 24 which has been placed
on the platform 50. This downward pressure
may be effected either by hand or by means of
a power operated press head H which is brought
10 down on the block and applies the required pres
sure to complete the sealing operation.
'
The sealing material 46“ has sufficient body
and is su?iciently viscous to. insure a perfect seal
between the block and the lid 24.‘ The sealing
material quickly cools when brought in contact
with the comparatively cold lid 24 and is thus
hardened sufficiently to provide a permanent seal.
The hot air within the block also quickly cools
with a consequent reduction of pressure, thereby
'20 causing a partial vacuum within the block. At
the same time the temperature of the block itself
is lowered, causing a moderate contraction-which
applies pressure to the sealing medium ‘and thus
tends to“ increase the effectiveness and perma
25 nency of the seal.
' In the modi?cation shown in Fig. 8, the seal
ing material is transferred from the bath to the
hollow block by means of a transfer plate 15 hav
' ing a ?xed mounting on the post. i I. The means
for attaching the plate 15 to the post comprises
an auxiliary plate or yoke 16 mounted on the
upper reduced end of the post II and connected
to the plate 15 by bolts 11. Collars 18 are mount
‘ ed on the bolts 'I'l between the plates 16 and ‘I5
35 for spacing, said plates apart. The plate 15
.carries an applicator 19 in the form of a mar
ginal strip of felt wool or other suitable material
support for a cover plate or lid,.a platform sur
rounding said support, and springs holding the
platform at about the level of the table and
permitting downward movement of the platform
under pressure, the platform being adapted to 5
hold a hollow article, open side downward, over
a. cover plate on said stationary support and
permitting said article and platform to be moved
downward under pressure into sealing engage
_ ment with the cover plate.
=
,
10
2. The combination of a table having an open
ing therein, a stationary supporting plate,‘ an
open platform mounted in said opening in the
table and surrounding said plate, said platform
being movable downward relative to the table, 15
and spring means for normally holding the plat
form at about the level-of said table.
3. The combination of a table having an open
ing therein, a stationary supporting plate, an
open platform mounted in said opening in the 20
table and surrounding said plate,.said platform
being movable downward relative to the table,
spring means for normally holding the platform
at about the level of said table, and spring clips .
mounted on said platform in position to hold a 25
hollow article in alignment with said stationary
support.
_.
.
-
4. Apparatus for sealing a cover plate to the
open side of a hollow article, comprising a table
on which the article is supported with its open 30
side downward, means for supporting the cover
plate with its upper face at no time higher than
the plane-of the table, means for directing a gas
into said article while supported in said posi
tion on the table adjacent the cover plate, the 35
parts being arranged to permit the article to be
_moved.laterally to a position directly over. the
‘for transferring a coat of the sealing material cover ‘plate while the table and cover plate main
from the bath l3 to the sealing surface of the tain the article substantially closed, and means
which relative movement of said article and 40
'40 hollow block. A metalbinding strip 80 (Fig. 9) ' by
serves to secure the applicator 19 in position cover plate may be ‘effected to bring said plate
on the plate 15. When the tank I! is in its into sealing engagement with the article.
5. In apparatus for sealing a cover plate to
normal elevated position, the transfer plate 15
and the applicator ‘l9 thereon are immersed in
45
the sealing liquid l3.
_
‘
In Fig. 10, I have shown a modi?cation of the
'means for supporting the hollow block and cover
plate during the sealing process. In this instance,
the cover plate is supported directly on the table
50 In. The yieldable platform for the hollow block
is also omitted, the block being placed directly
' on the cover plate, the spring clips 58 serving
to guide and hold thevblock in position.
Modifications may be resorted to within the
55 spirit and scope of my invention.
What I claim is:
'
I
a hollow article, the combination of a table
having an opening therein, means for supporting 45
the cover plate within said opening with the‘
upper surface of said plate at no time higher
than the level of the table, means for directing
a heated gas upwardly into the hollow article
whilethe latter is supported on the table with 50
its open side downward, said article being mov
able laterally i’rom said gas receiving position to
a position directly over the cover plate, and
means for directing the cover plate into sealing
engagement with said article.
~
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1. The combination of a table,‘ a stationary
GAMES 'smr'ma.
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